Incandescent-lamp holder.



PATENTED MAR. 21, 1905.

J. FEIGHNER.

INCANDBSGENT LAMP HOLDER.

AYPLIOATION FILED SEPT. 23,1904.

NiTnD STATES Patented March 21, 1905.

PATENT Orricfna lNCANDES-CENT-LANIP HOLDER.

SPECIFICATION forming part of Letters Patent No. 785,483, dated March21, 1905.

Application filed September 23, 1904. Serial No. 225,564.

pensive, both in production and maintenance,l

for the exhaustion of the large globe is expensive and usuallyinefficient and when the filament burns out the whole lamp is useless.

The object of this inven-tion is to provide a very cheap constructionwhich shall have all the appearance of such frosted sphericallyglobedlamps.

To this end the invention comprises the combination, with an ordinaryincandescent lamp and a spherical globe adapted to surround the same, ofa specially-arranged socket member and globe-holder adapted to hold thelamp and globe and be hidden by a rciiector or cap forthe globe.

The invention is more fully hereinafter described, and its definitecharacteristics are set out in the claims.

In the drawings, which fully disclose my invention, Figure 1 is a sideelevation, partly broken away, showing the complete structure of socket,lamp, globe, holder, reflector, and cap. Fig. 2 is a central sectionthrough the holder and globe. Figs. 3 and 4C are side ele vations of thetwo parts of the holder.

Referring to the parts by letters, A represents any ordinaryincandescent lamp, and B the usual socket therefor. Instead of securingthe lamp directly into the socket I provide an intermediate lamp-holdingmember O, which has a male end adapted to screw into the socket and afemale end adapted to receive the lamp. The intermediate member referredto is shown of a form suitable for an Edison type of socket and lamp. Itcomprises a tubular metal sleeve c, which is formed to present externalscrew-threads c near one end and internal screw-threads c2 ofsubstantially the same bore at the other end. At the extreme maleend ofthis intermediate member is a contact-plate c3, and within the member isa contact-plate 0*, these plates being electrically connected together,as by means of the bar c5, and insulated from the tube by a suitablefilling e, which may be of plaster-ofparis. From this construction itresults that if this intermediate member is screwed in the Edison socketB it presents a new socket adapted for the reception of the lamp. i

The frosted outer spherical globe D has at its edge a flange (l, whichis grasped by springarms e, having their lower ends bent, as shown, andsecured at their upper ends to'a collar composed of the metal sleeve e,to which the arms are secured, and the surrounding insulating sleeve e2,rl`his collar is internally tapered, being contracted upwardly, and isadapted to snugly fit a correspondingly-tapered insulating-sleeve c7,carried on the outer side of the socket portion of the member O. By thisarrangement the outer globe D is securely held to the member O, which'immediately carries the lamp. For convenience of illustration I haveshown the globe-support as having four arms e, though in practico threearms are desirable.

The reiiector F is shown as an illustration of any ornamental cover forthe globe. It rests on the arms e and terminates at its up per end in aHange which closely surrounds the sleeve e2. A surmounting cap G extendsfrom the socket B over the sleeve e2 and the upper end of the reiector.By this arrangement the means for holding the outer globe are entirelyhidden, and the lamp presents the same' appearance as one of theexpensive frosted-globe lamps.

The small globe A of the ordinary lamp is exhausted much moreefficiently than can be a globe of the size of the globe D, whereforethe lamp A of the present construction burns longer than do the usualfrosted-globe lamps. The present construction is just as cheap, orcheaper, in the first installation and very much cheaper in maintenance,not only because the lamp lasts longer, but because it may be replacedas often as desired.

I claim- 1. A member adapted to make electric connection with a socketand itself carrying a socket, and an insulating-sleeve surrounding itssocket portion, combined with a globeholder comprising a metal sleeve,arms secured thereto and an insulating-sleeve surrounding a metalsleeve.

2. The combination of a member adapted to make electrical connectionwith a socket and itself carrying' a lamp-socket, an insulatingsleevesurrounding its socket portion, a globeholder comprising a collaradapted to engage the said sleeve and depending outwardly-fiaring armsadapted to hold a globe, the outer surface of said sleeve and the innersurface of said collar being correspondingly tapered, contractingupwardly.

3. The combination of a member adapted to make electrical connectionwith a socket and itselfl carrying a lamp-socket, an insulatingsleevesurrounding its socket portion, a globeholder comprising a collaradapted to engage the said sleeve and having an insulated exterior anddepending outwardly-Haring arms adapted to hold a globe, the outersurface of said sleeve and the inner surface of said collar beingcorrespondingly tapered contracting upwardly, a reiiector resting onsaid arms and having at its upper end a flange adapted to embrace saidcollar, anda flaring cap extending from the socket over the collar andupper end of the reflector.

4. In a combined support for an inner globe, an outer globe and arefiector, the combination of a male member adapted to enter the socket,a female member to receive the inner globe, and arms formed at theirends to carry the outer globe and having' their upper surface arrangedto support the reflector.

In testimony whereof I hereunto atx my signature in the presence of twowitnesses.

JONAS vFEIGrHlN'ER.

Witnesses:

CLIFFORD SKILES, J ENNIE KIRKPATRICK.

